The Irish Lotto draw on 21 October 2026 produced the winning numbers 11, 15, 21, 35, 40 and 43, with 17 drawn as the bonus ball. For anyone tracking lottery statistics, this was a draw worth a closer look, since it featured two numbers repeating from the previous week and a bonus ball that had been missing for the best part of seven months.
Among the six main numbers, five were odd — 11, 15, 21, 35 and 43 — leaving 40 as the lone even number. That kind of imbalance is unusual, though far from unheard of, and it's exactly the sort of pattern that regular players of the Irish Lotto like to note when reviewing recent Lotto results.
The headline talking point from this draw is the appearance of both 21 and 43 in consecutive weeks. Back-to-back repeats are relatively rare events in a game with 47 numbers to choose from, so seeing two numbers repeat in the same draw stands out. Number 21 in particular has a strong pedigree: it has now been drawn 99 times across 683 draws, making it one of the most frequently selected numbers in the game's history. Interestingly, 21 also turned up in this week's UK National Lottery draw, a coincidence that's bound to catch the eye of cross-border lottery watchers, even though the two draws are entirely independent of one another.
On the bonus ball side, 17 made a notable return. It had been absent for 29 consecutive weeks before finally appearing again on 21 October 2026. Historically, 17 is one of the rarer bonus numbers, having appeared just 72 times in 683 draws — a frequency noticeably below the average expected for a number that should, in theory, appear with roughly equal likelihood to any other.
None of these patterns change the fundamental odds of any future draw — each draw is an independent event, and past frequency, however striking, does not predict what will happen next. It's still statistically valid, however, to track how numbers behave over time, and many players find it interesting context even if it offers no guaranteed edge.
With no jackpot winner this time, the prize rolls over to an estimated €3.5 million for the next Irish Lotto draw. Players hoping to add their own numbers to the mix will want to keep an eye on how frequently drawn numbers like 21, and rare ones like 17, continue to behave over coming weeks.
For readers who want to dig deeper into these lottery statistics themselves — frequency charts, repeat patterns, and bonus ball history included — the full data set is available at strategy-tracker.lawley.de.